diff --git a/hapi-fhir-structures-dstu3/src/main/java/org/hl7/fhir/dstu3/model/DateType.java b/hapi-fhir-structures-dstu3/src/main/java/org/hl7/fhir/dstu3/model/DateType.java
index b64c13eeb4d..e3f49e65687 100644
--- a/hapi-fhir-structures-dstu3/src/main/java/org/hl7/fhir/dstu3/model/DateType.java
+++ b/hapi-fhir-structures-dstu3/src/main/java/org/hl7/fhir/dstu3/model/DateType.java
@@ -39,7 +39,7 @@ import java.util.Date;
 import java.util.GregorianCalendar;
 import java.util.TimeZone;
 
-import org.apache.commons.lang.Validate;
+import org.apache.commons.lang3.Validate;
 
 import ca.uhn.fhir.model.api.annotation.DatatypeDef;